Bird activity center



FIG. 1 is a front elevational view of a bird activity center;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a perspective view thereof, the bird shown in broken lines represents environmental matter being for illustrative purposes only and form no part of the claimed invention. 

The ornamental design for a bird activity center, as shown and described. 